- See Also: Seven Heavenly Profound Treasures
It is ranked third of the seven Heavenly Profound Treasures. It holds the power of eternity. It is said that it was birthed in the center of the primordial universe and its energy is also connected with that of the primordial universe, so as long as the primordial universe does not die it will never be destroyed. 
Just carrying the the seal, your lifespan will never decrease, nor will you age. But it doesn't make you immortal, as you can still be killed by external forces.